Re: Charge pipe options for jet adaptors
The HFS-4's water jet thread size is M8 x 0.75mm. For ease of installation we provide two M8 to 1/8NPT adaptors.
Some people has experienced problem of fitting these adaptors into their charge pipes. There are rumours that our NPT thread is different from other NPT threads. This is not true.
NPT thread is tapered. Our NPT thread has a large diameter, but thread pitch is the same. All you need to do is to run the tap a bit deeper. We did this for several reasons.
1. We have a stronger wall between the M8 and outer NPT thread.
2. The large diameter allows more freedom to adjust the depth of the adaptor.
3. No need to use plumber's tap to fill up the gaps.
4. Lastly, clean the components before loctite.
Just to confirm, our jet adaptor can be fitted into any charge pipe.
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Richard L
aquamist technical support
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